Evaluation of tooth coronal index bicervical diameter in mesiodistal direction & modified kvaals method for age and gender determination using digital panoramic radiographs: A retrospective study

Abstract

The aim of this study was to evaluate tooth coronal index, bicervical diameter in mesiodistal direction & modified kvaal's method of age estimation for age and gender determination. Materials and Methods: The digital panoramic radiographs of 200 subjects of aged 20-60 years were selected for the study. Tooth Coronal Index(TCI), height of the crown i.e Coronal Height(CH) and the height of the coronal pulp cavity i.e Coronal pulp cavity height (CPCH) of mandibular first molars was measured in millimeter(mm). Then TCI was calculated and calculated age was compared with chronological age. For pulp/tooth ratio, the measurements of Pulp Chamber Height (PCH) and Crown Root Trunk Height (CRTH) were performed on the mandibular first molar the pulp chamber crown root trunk height ratios (PCTHR) of selected tooth were calculated. Also the bicervical diameter in mesiodistal direction was measured. The measurements were performed on these JEPG images by using Digimizer 5.3 Software. The acquired data were subjected to Pearson correlation test, unpaired t test and Analysis of variance (ANOVA) analysis. Results: Results suggested that statistically significant differences were observed between chronological and calculated age with TCI for right mandibular molar, CPCH and Mesiodistal dimension where as CH shows negative correlation with chronological age.